Which Linux command is used to add a group to the system? MCQ with Answer and Explanation

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Which Linux command is used to add a group to the system?

A. newgrp

B. groupmod

C. groupadd

D. addgroup

Answer: Option C

Solution (By JKSSB Mock Tests)

groupadd creates a new group; addgroup is a friendlier front-end on Debian.

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Question #1

Which of the following is a feature of the Windows 10/11 'Task View'?

A. Virtual desktops

B. Application grouping

C. Timeline showing activity history

D. All of the above

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Correct Answer: Option D

Explanation:
Task View includes timeline (Windows 10), virtual desktops, and allows switching and grouping apps.

This question belongs to: Computer Operating Systems

Question #2

What is the primary advantage of a distributed operating system?

A. It allows multiple computers to work together as a single system, providing scalability and fault tolerance

B. It is easier to manage than a single system

C. It requires less memory

D. It has better graphics

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Correct Answer: Option A

Explanation:
Distributed OS manages resources across network nodes, offering high availability and load balancing.

This question belongs to: Computer Operating Systems

Question #3

What is the primary difference between multiprocessing and multitasking?

A. Both are the same concept

B. Multiprocessing refers to running multiple programs, multitasking to multiple threads

C. Multiprocessing uses multiple CPUs, while multitasking uses a single CPU

D. Multitasking uses multiple CPUs, while multiprocessing uses a single CPU

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Correct Answer: Option C

Explanation:
Multiprocessing involves multiple physical CPUs/cores to execute processes concurrently, whereas multitasking is the ability to run multiple processes on one CPU via time-sharing.

This question belongs to: Computer Operating Systems

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